The case against three people accused of killing six children in a house fire in Victory Road, Derby, last May, opened yesterday.The children's parents Mick and Mairead Philpott, and family friend Paul Mosley, have pleaded not guilty to six counts of manslaughter.Day 3 of the trial Philpott, along with his wife, Mairead, allegedly started the blaze at their semi-detached home after making reports to the police that his former mistress, Lisa Willis, had been threatening him and his family.A total of 11 children lived at the Victory Road home – six were those of Mick and Mairead Philpott, while four were his children with Ms Willis. Another child was Ms Willis's with another man.4.10pm The case is adjourned until tomorrow at 10.30am.4pm Lisa Willis told the court that on the day she left 18 Victory Road she received a series of text messages from Mick and Mairead's phones asking her what the problem was. She replied: "I have left and the kids are all right. I can't take no more."3.50pm Anthony Orchard QC, representing Philpott, put it to Ms Willis that two people had heard her say about Mick: "I will burn him before he sees the kids". She told the court: "I never said nothing like that."3.35pm In cross-examination Ms Willis admits to having had a 'brief sexual relationship' with Mick Philpott's eldest son from a previous relationship in 2002-3 - while she was seeing Mick Philpott.3.25pm Ms Willis told the court that Philpott was never violent towards the children.3.20pm Cross-examination of Ms Willis, by Anthony Orchard QC, representing Philpott, begins.Ms Willis told the court Philpott had a bath once a week or once a month and did not change his clothes very often.3.15pm Ms Willis told the court Mick Philpott and Paul Mosley were like best mates. She said she saw Mairead's children like her own and treated them all the same. Prosecutor Richard Latham asked her: "When you found out what had happened how did you feel?""I was devastated," Ms Willis told the court. 3pm Ms Willis said shortly before the court case set for May 11 [for a residency order concerning her and Mick's children] police visited her saying Mick said she had made a phone call to him, threatening him and his family. She told the court she had not done this.2.45pm Ms Willis said that after she left the Philpott house for good she went to stay in a women's refuge with the children.2.30pm She told the court that she walked out of the house one day after an argument and Mick Philpott told her to come back. She refused and he said: "I hope you get run over", the court heard.Ms Willis said she never had a key to the Philpott house.1pm Ms Willis said when she lived with the Philpotts she and Mairead would "take it in turns to spend the night with Mick". She told the court: "It was never all three of us. It was one night with me and one night with Mairead."During the trial floorplans of the Victory Road property were shown. They can be seen by scrolling through the pictures above.12.30pm Ms Willis said that she first met Mick Philpott in the street and following a New Year's Eve party he asked her to move in with him, court heard.She tells the court that she moved in within weeks and a sexual relationship started a few weeks later. Ms Willis claimed that within a few weeks of her moving in Mick Philpott struck her five to 10 times with a piece of wood in the back bedroom of the Victory Road home, leaving her with bruising.Court hears other incidents of rage included Philpott grabbing Ms Willis by the coat and throwing a cup of coffee at her.Ms Willis said: "I ran out into the street and he came after me."12.10pm New juror sworn in. Proceedings now about to resume.11.20am Proceedings have been delayed for legal reasons.10.15am: Lisa Willis will give evidence behind screens today so that she can not see any of the defendants, the press or the public. Only the judge, jury and barristers will be able to see her.

Yesterday Prosecutor Richard Latham QC told the jury this is a "whodunnit trial".He said the jurors had to decide if the fire was an inside job or was started by someone else.The jury of six men and six women, who were sworn in yesterday morning, were told by the prosecution the fire was stared deliberately and was part of "a plan that went horribly wrong and ended in a terrible tragedy".Mr Latham told jurors they were trying and would ultimately decide the verdict of the case on evidence that the actions of the defendants to any "sober and reasonable person" were unlawful because starting the fire with the children in the house would put them at substantial risk."This is not a murder trial," he said."What is alleged is that these children died as a result of the unlawful acts of these defendants who, we say, were acting together in a joint enterprise – setting a house fire.

"It is alleged they are criminally responsible for the deaths as a result of setting the fire for some motive, for some other perceived advantage."

The trial involving the trio will last at least six weeks. Each of the three defendants has a senior and junior barrister representing them. Mick Philpott's advocate is Anthony Orchard QC, assisted by Louise Sweet.Mairead Philpott is represented by Sean Smith QC, assisted by Harry Bowyer.

And Mosley's senior barrister is Benjamin Nolan QC, supported by Clive Stockwell.Mr Latham and James House appear for the Crown Prosecution Service. Such is the demand for media coverage at the trial, proceedings are being beamed to a TV in the press room at the court. Media are only allowed into the actual court on a strict ticketing basis.*THE PHILPOTT TRIAL: Visit our Philpott trial channel here for all related stories in the fire death case.